1FL3

CRYSTAL STRUCTURE OF THE BLUE FLUORESCENT ANTIBODY (19G2) IN COMPLEX WITH STILBENE HAPTEN AT 277K


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.100 

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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

Blue-fluorescent antibodies.

Simeonov, A.Matsushita, M.Juban, E.A.Thompson, E.H.Hoffman, T.Z.Beuscher IV, A.E.Taylor, M.J.Wirsching, P.Rettig, W.McCusker, J.K.Stevens, R.C.Millar, D.P.Schultz, P.G.Lerner, R.A.Janda, K.D.

(2000) Science 290: 307-313

  • DOI: https://doi.org/10.1126/science.290.5490.307
  • Primary Citation of Related Structures:  
    1FL3

  • PubMed Abstract: 

    The forte of catalytic antibodies has resided in the control of the ground-state reaction coordinate. A principle and method are now described in which antibodies can direct the outcome of photophysical and photochemical events that take place on excited-state potential energy surfaces. The key component is a chemically reactive optical sensor that provides a direct report of the dynamic interplay between protein and ligand at the active site. To illustrate the concept, we used a trans-stilbene hapten to elicit a panel of monoclonal antibodies that displayed a range of fluorescent spectral behavior when bound to a trans-stilbene substrate. Several antibodies yielded a blue fluorescence indicative of an excited-state complex or "exciplex" between trans-stilbene and the antibody. The antibodies controlled the isomerization coordinate of trans-stilbene and dynamically coupled this manifold with an active-site residue. A step was taken toward the use of antibody-based photochemical sensors for diagnostic and clinical applications.


  • Organizational Affiliation

    Department of Chemistry, The Scripps Research Institute and the Skaggs Institute for Chemical Biology, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
BLUE FLUORESCENT ANTIBODY (19G2)-HEAVY CHAINA [auth H],
C [auth A]
208Mus musculusMutation(s): 0 
UniProt
Find proteins for P01867 (Mus musculus)
Explore P01867 
Go to UniProtKB:  P01867
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01867
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
BLUE FLUORESCENT ANTIBODY (19G2)-LIGHT CHAINB [auth L],
D [auth B]
214Mus musculusMutation(s): 0 
UniProt
Find proteins for P01837 (Mus musculus)
Explore P01837 
Go to UniProtKB:  P01837
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01837
Sequence Annotations
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
SPB PDBBind:  1FL3 Kd: 160 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.100 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 196.93α = 90
b = 62.069β = 117.54
c = 93.539γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
CNSrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-01
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Data collection
  • Version 1.4: 2018-01-31
    Changes: Database references
  • Version 1.5: 2024-10-30
    Changes: Data collection, Database references, Derived calculations, Structure summary